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A person whose head resembles a cross between retro-gaming legend pacman and a celestial body, normally the moon or the planet Uranus.

Pacmoons should be considered to be extremely dangerous as they could be struck by meteors at any moment, however, they have a profound fear of jelly-shaped phantoms.
Purdon: "Shit, here comes Kingy with his goddamn pacmoon blocking out the sun."

Matt: "Chill, he's following that row of yellow dots. Greedy fucker!"
by JonezyUK August 12, 2008
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